Semi-Fixed Feeder Rig

The main advantage is the bolt rig effect, caused when a fish takes the bait, turns away, and hooks itself against the weight of the feeder. Safe (semi fixed) and good in running and stillwater but not good for small fish as they may not register a bite if they can’t or don’t move the feeder.

I think it first became popular for carp fishing, but also works well for other larger fish like barbel, tench, bream.....